匹配的规则不能用 "/
源码范例:
复制代码 代码如下:
header("Content-type:text/html;charset=utf-8");
$str = '
测试php正则匹配掉js代码测试php正则匹配掉js代码测试php正则匹配掉js代码测试php正则匹配掉js代码测试php正则匹配掉js代码测试php正则匹配掉js代码
测试php正则匹配掉js代码';
$preg = "/<script>/i";<BR> $newstr = preg_replace($preg,"",$str,3); //第四个参数中的3表示替换3次,默认是-1,替换全部<BR> echo $newstr;</script>
?>

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